Since 1992, the San Francisco Mint has been offering Proof Sets of both the conventional copper-nickel coinage and ones in which the dime, quarter and half are .900 fine silver. Meticulously crafted, with mirror-like surfaces and frosty details, Proofs are the cornerstone of any collection. With a low mintage of only 2,543,401 you`ll want to order this San Francisco Mint copper-nickel Proof coin today!